Sister chromatid exchange

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sister chromatid exchange (SCE) An event, similar to crossing-over, that can occur between sister chromatids at mitosis and meiosis. It may be detected in harlequin chromosomes (sister chromatids that stain differently so that one appears dark and the other light).

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sister chromatid exchange (SCE) An event, similar to crossing-over, that can occur between sister chromatids at mitosis and meiosis. It may be detected in harlequin chromosomes (sister chromatids that stain differently so that one appears dark and the other light).